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      12-21-2011, 09:48 AM   #19
THE TECH
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Drives: BPMsport 2012 E92 M3
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Quote:
Originally Posted by Nautik View Post
Just use the factory Xpipe and gut the secondary cat. 200 bucks at an exhaust shop is what most people seem to report for that.
That's won't necessarily pass the smog test.
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